Improved brick-kili



@uiten aient @frn Letters Patent No. 75,730, dated .March 24, 1868.

IMPROVED BRIGKfKILN.

' @La Srlgetule tefcttrt tu it tigen ettets ntntt mit mating :gaat uf tin :iz-tmc.

'lO ALL WHOM IT MAY CONGRN:

Bc it known that I, SAMUEL HQQLAAPP, of Malden', -in the county oi' Middlesex, and State of Massachusetts, have invented certain new and useful Improvements in Brick-Kilos; and I do hereby declare that the following is a full'and exact ldescription thereof', reference being had to the accompanying drawings, and to the letters of reference marked thereon.

.To enable others skillcdin the art to make and use my invention, I will proceed to describe its construction, its nature, and use.

The nature of myinvcntion consists in combining, with ,a brick-kiln, a chimney with ilues, inlet-s, and dampers, so arranged that by proper management oi' the fires, the hcatcdair may be direc-ted at will through any portion of the kiln.

' Drawings.

Figure 1 is a perspective view of thekiln and chimney, a portion ci' the case ci' the kiln beingremoved so as to show` th'e unburned bricks, C.

Figure 2 is a vertical section, showing the arrangement of the bricks C, and oi' the fines and darnpers.

The permanent part of my kiln is the doubl'edlue chimney M M', having cap-dampers, N N', at the top, which may be operated by cords attached to the levers O O', iig. 2. The Hue, M, nearest the kiln, has a largo number of openings, K K' K", die., extending from the top to the bottom ot' th-e kiln, while the ue .L has openings only very near its bottom. The duchi is provided with a damper, H, at a distance from the bottom equal Vto about halt` the height of the kiln. The temporary part of the kiln, A, is constructed in the ordinary manner, that is, of refuse brick and plastic clay. In actual construction the walls forming the kiln A are so arranged in.relation to thebrcks that air-spaces are left, so that the heated products of combustion may freely circulate about thc outside of the pile of bricks to be burned.

The uses and objects of the several parts will best be understood from the description of the process of burning bricks in my kiln.` The bricks to be burned are piled as represented at C, figs. 1 and 2, the tire-openings or arches being formed in the usual manner, represented in the drawings by D D D", ke., and-E E' E", Ste., one end of the kiln` batting against the chimney B, all other parts being covered with refuse bricks and daubed with plastic clay. The drying-fires are made throughout the kiln, al1 burning at the same time, until the bricks become suiiicently dry and the heat becomes suilicient to create a strong draught. Then all the fires except two or three at the end of the kiln that is away from the chimney, are allowed to go out, the doors ofthe openings being closed. The end res E E' are maintained, the heat being directed, by means of the dampers N N' and H, through the upper or lower portion ofthe kiln.- When that portion of the kiln over the lires E E' is sul'iicicntly burned, fires are started in the arches nearer the chimney, and the heat managed in the same manner as above described. This operation is continued until tires have been made in all the arches.

It will be seen that by my arrangement all the heat of the irst fires will be utilized, as it has tc pass entirely through the kiln; that is, it partially burns the bricks over the arches that are nearer to the chimney, se that it requires but slight firing to-completc the burning ci' the bricks over the near arches.

Having thus described my invention, I will proceed to set forth my I i Claim.

What I claim as my invention, and desire to secure by Letters Patent of the United States, is-.

'lhc brick-kiln A, provided with the iiucs M M', dempers N N', and H, and the openings K K', and L, combined and arranged as set forth and described.

S. H. CLAPP. Witnesses:

FRANK Gr. PARKER,

A. HUN BERRY. 

